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Finding the Fourth Proportional to 489,642,003.40, 734,463,005.10 and 162,168,059.20

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Solution

The fourth proportional to 489,642,003.40, 734,463,005.10 and 162,168,059.20 is: 243,252,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,642,003.40 : 734,463,005.10 = 162,168,059.20 : x
  2. Step 2: Convert to fraction form
    489,642,003.40/734,463,005.10 = 162,168,059.20/x
  3. Step 3: Cross multiply
    489,642,003.40x = 734,463,005.10 × 162,168,059.20
  4. Step 4: Simplify right side
    489,642,003.40x = 119,106,440,091,266,704
  5. Step 5: Solve for x
    x = 119,106,440,091,266,704/489,642,003.40
  6. Step 6: Final answer
    x = 243,252,088.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.